<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>alt-vs-title</title>
    <style>
        .sifou-cat {
            max-width: 60%;
            display: block;
            margin: 20% auto;
        }
    </style>
</head>
<body>
    <img src="https://www.eveningwater.com/img/segmentfault/1.png" alt="图片加载中" title="思否猫" class="sifou-cat"> 
</body>
</html>